// Press Shift twice to open the Search Everywhere dialog and type `show whitespaces`,
// then press Enter. You can now see whitespace characters in your code.
public class Main {
    public static void main(String[] args) {
        int myInt = 100;
        byte myByte = (byte) myInt;
        //将int类型转换为byte类型
        double myDouble = 3.14;
        float myFloat = (float) myDouble;
        //将double类型转换为float类型
        
    }
}